Hydraulic workholding assembly
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United States of America Patent
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Issued Date -
Apr 26, 2007
app pub date -
Oct 18, 2005
filing date -
Oct 18, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A workholding assembly for releasably holding a work piece includes a master variable-volume fluid chamber disposed between a machine and the machine's axially-movable draw bar such that the workholding assembly converts the mechanical axial force/movement of the draw bar into fluid pressure/fluid flow. The resulting fluid pressure operates a fluid-driven gripping assembly such as a radial-piston-based hydraulic collet assembly or a diaphragm-based hydraulic gripping assembly. The hydraulic collet assembly may be a quick-change assembly that enables an operator to quickly and easily change between differently sized or shaped collets.
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